Dark Urine in Babies & Toddlers
Content reviewed against published AAP, Mayo Clinic, NHS guidelines
Last reviewed:
Normal baby urine is pale yellow to almost clear. Dark urine (deep yellow, amber, brown, or tea-colored) in babies most commonly indicates dehydration (concentrated urine) but can also suggest liver problems, blood in the urine, certain medications, or metabolic conditions. In newborns, brick-red urate crystals in the diaper are common and harmless but can be mistaken for blood.
Key takeaways
- Normal baby urine is pale yellow to almost clear.
- Most common cause: Dehydration (concentrated urine)
- Emergency: Dark urine with signs of severe dehydration (no tears, sunken fontanelle, unresponsive)
- Home care: Increase fluid intake: offer more frequent breastfeeds/formula or water (for babies over 6 months)
Possible Causes
When to Seek Help
Emergency — Call 911 or go to ER:
- Dark urine with signs of severe dehydration (no tears, sunken fontanelle, unresponsive)
- Brown/cola urine with facial swelling and reduced urine output (acute nephritis)
- Dark urine with severe abdominal pain and jaundice
- Very dark urine with muscle pain after prolonged illness/immobility (rhabdomyolysis)
Urgent — See doctor today:
- Persistently dark urine with reduced wet diapers in infant (dehydration)
- Tea/cola-colored urine that persists over multiple voids
- Dark urine with yellow skin/eyes (jaundice) in baby over 2 weeks old
- Dark urine with pale/clay-colored stools (biliary obstruction)
- Dark urine with puffy face or limb swelling
Same-day appointment:
- Dark urine lasting more than 24 hours without clear dehydration cause
- Dark urine 1-2 weeks after sore throat or skin infection
- Persistent dark urine despite adequate fluid intake
- Dark urine with dysuria or foul smell (UTI concern)
Monitor at home:
- Slightly concentrated first morning urine that clears with fluids
- Dark urine during illness that improves with rehydration
- Urate crystals in newborn diaper (pink/orange staining first week)
- Urine color change clearly related to food (beets, berries) that resolves
By Age
0-2 months
Normal: Urate crystals (pink/orange staining in diaper) are very common in first week and harmless. Slightly concentrated urine on day 2-3 before milk comes in is normal. Urine should become pale yellow by day 4-5 as feeding establishes.
Worry if: Dark urine beyond day 4-5 of life (inadequate feeding/dehydration). Tea-colored or brown urine (liver concern). Dark urine with jaundice (conjugated hyperbilirubinemia). Fewer than 6 wet diapers per day after day 4. Dark urine with poor feeding or lethargy.
2-6 months
Normal: Normal urine is pale yellow. Slightly darker first morning urine is normal. Color variation from day to day depending on hydration.
Worry if: Persistently dark or tea-colored urine. Dark urine with fewer wet diapers than usual. Brown or cola-colored urine. Dark urine with vomiting, diarrhea, or reduced feeds. Dark urine with pale/white stools (biliary concern).
6-12 months
Normal: Urine color may vary slightly with diet as solids are introduced. Beets can turn urine pink/red. First morning urine being slightly darker is normal.
Worry if: Persistently dark amber urine suggesting chronic dehydration. Tea/cola-colored urine (glomerulonephritis). Dark urine with swelling (puffy eyes, swollen hands/feet). Dark urine with abdominal pain or fever.
1-3 years
Normal: Normal urine is pale to medium yellow. Some color change from food dyes is common. Slightly darker after active play without enough fluids.
Worry if: Cola/tea-colored urine persisting more than one void. Dark urine with facial puffiness (nephritic syndrome). Dark urine following sore throat or skin infection by 1-2 weeks (post-streptococcal glomerulonephritis). Dark urine with significant pallor or jaundice.
Home Care
- Increase fluid intake: offer more frequent breastfeeds/formula or water (for babies over 6 months)
- Monitor wet diapers: aim for at least 6 wet diapers per day in infants
- Check diaper color against white tissue to accurately assess urine color
- Keep a record of urine color, frequency, and fluid intake
- For mild dehydration during illness: offer small frequent amounts of fluids or oral rehydration solution
- Note recent food intake that could change urine color (beets, blackberries, food dyes)
- Note any medications that may change urine color
- If urine is tea/cola-colored: save the diaper or collect a sample to show the doctor
- Dark urine with pale stools = always needs medical evaluation (liver/biliary concern)
Frequently asked questions
What causes dark urine?
When is this an emergency?
What can I do at home?
When should I call the doctor?
Sources
All content follows our editorial policy and is reviewed against published clinical guidelines.
2,705 evidence-based guides6 authoritative medical sources
Related Symptoms
Bottom line
Most cases of dark urine in babies are not emergencies. However, seek immediate care if dark urine with signs of severe dehydration (no tears, sunken fontanelle, unresponsive).
Trust your instincts. If something feels wrong, reach out to your pediatrician. Worrying about your baby means you care — that is a good thing.